PATCH: get_cyclecount() on ARMv6 and better

[Mark R V Murray]

On 3 Aug 2013, at 23:15, Aleksandr Rybalko <ray at freebsd.org> wrote:
> Another potential useful thing, not to close it under #ifdef ARMv6, but
> check ARM processor Feature registers.
> MRC p15, 0, <Rt>, c0, c1, 2; Read Debug Feature Register 0 
> Here is [27:24] bits - Performance monitor model, zero - lack of PMU.
> But unfortunately, Cortex-A8 have no such bits, but have CCNT reg. :)

Thanks for the hint, but it soinnds like I'm going to need a bit more
expert knowledge here.

So what will work on all ARMs, then?

M
-- 
Mark R V Murray

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